Progress

Manufacturing

Pacific Precision is able to make the output shafts; unfortunately they will not be done until late next week. We also confirmed that the robot frames will be ready to be picked up from Central Powder Coating at the end of business day Thursday.  We continued progress on machining the bumper mounting pins, and will begin on the kicker piston bearing cones once the bumper mounting parts are complete.

Design

The control board CAD is being revised and we purchased all of the components for the boards.

Other News

We secured a local embroidering shop to make the team numbers on the bumpers.

We have contacted Motion Industries for a quote for all the ball bearings, and are currently awaiting word back.

Progress

MANUFACTURING

The manufacturing team has been working hard to complete parts for the drivebase.  After completing gears and sprockets, we have moved onto the construction of the shifting dogs for both the drivetrain and the kicker winch.

DESIGN

The design team has been working to finalize a myriad of parts so that manufacture can begin.  The plates for the kicker winch and arm have been finalized, and will begin being waterjet at BAE Systems tomorrow after the material is delivered.  Design on the rollers is continuing, implementing the Clutch that we have purchased from McMaster-Carr.

Welding Complete, Off to Powder Coat

Today the welding was completed at Ride & Show Engineering, and the frames were delivered to Central Powder coating. The picture below shows us with the kind folks at Ride & Show.

Robot Hanging

Control Board

Update: Here’s the newer revision of the control board. I’ve added an ethernet port and a female barrel plug for the Classmate PC.

Here’s the first revision of the control board with a suggestion of buttons and functions.

We will be using this LED w/Defuser(Red and blue??)

Roller Prototyping Progress

Today, we continued prototyping dual roller systems.  We worked hard to emulate the drawings we had, but still found minimal success with the belt-driven systems.  The faster the rollers were moving, the better the results.  However, if the rollers were moving too fast, the window motors would stall and be damaged.

At the end of the evening, we strapped a Dewalt 3 Speed Drill onto the robot.  With the shifter on middle or high speed and the clutch set very low, we were able to obtain and hold the ball extremely well.  Videos of this system at work are below.

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Robot Chassis Ground

Here’s a few shots of the welded base after having the welds ground flush.

General Update

We continued to revise the two horizontal-rollers prototype so that it would be ready for proper implementation on the final design. Some of the most recent changes made include a stop, so that the ball is physically limited from entering more than 3 inches into our robot. Unfortunately in the earlier tests the ball actually entered 4 inches into our robot and roughly 1/16 inch off the ground. We also shifted the upper roller as forward as possible while retaining space for the bearing and moved the lower roller forward. The roller speed was also increased from the window motors with a 4 to 1 pulley reduction Videos should follow tommorrow after the design is perfected further.

Down in the shop we continued to pocket gears on the CNC and several sets for both the drive-train gearbox and the shooter winch gearbox have been manufactured already. Hopefully by the end of tommorrow we will be for the most part done pocketing the gears (at least the ones finalized on the design). They will be ready for ship by Monday or Tuesday.

Prototyping Progress

Dual horizontal rollers with tennis racquet grip tape = money.

Team 254 finally finished the initial prototype for dual horizontal rollers this evening (Based on 148’s prototype) and after much tweaking we found that the rollers held the ball securely and within the limits of the rules. The mechanism uses two small window motors running continuously (at least in this prototype), and it has little difficulty with picking up a ball on the go. For a final design, the rollers should spin faster to ensure that the ball is picked up 100% of the time, and actual placement of the rollers will need to be tweaked to perfection.

Roller Setup with 2 rollers covered in tennis raquet grip tape.

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On the third day…

After calling many fabrication shops in Southern California within a radius of 45 miles, we ended up at the California Polytechnic University, Pomona shop. Our metal forming division was lucky enough to find the proper die to create the 45 degree bends on a 100 ton press brake.  Setting up the machinery and completing the bends took 6 hours.

Our newly acquired sponsor, TOMCO Products in Azusa, was able to perform the 90 degree bends with a very quick turn around.

Below are our newly trained press brake operators holding the first bent plate

Here’s one of our highly skilled operators hard at work(or hardly working)

Here’s a plate being formed

Here’s another photo of a plate being formed

Here’s our assembly and inspection division test fitting the formed pieces

Here’s where Jesus joins metal with all his might


Oh, for your enjoyment

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Oh, and uhh.. here’s the current status of the parts:

We currently have one fully welded base, two tacked bases, and one base waiting to be welded.

Jesus needs to take a break, so, he’ll be back on Friday to complete joining metal.

Finally, below is an artist depiction of our team’s weekly activities courtesy of our comic division: